Ok, thank You for the heads up. I will try in different app (wallet), electrum can not open it, synchronizes too long and nothing happen. Will try to find some similar app on android.
Since your phone is still under KitKat version it would be hard for us to find which wallet will work on Android KitKat.
Anyway, there are many other options not only electrum for mobile but I think the result might be still the same.
What I think is trying to install an older version of Electrum mobile?
Electrum 2.3 to 2.7 version might work on Android KitKat. You can download them directly from Electrum download page from here
https://download.electrum.org/ as an APK extension.
It seems that older than Electrum 2.7 below doesn't have APK file so try the 2.7 version under that folder then install and import the seed phrase just don't forget to set it to BIP39 so that the seed from mycelium will work.
Just make sure to don't update the Electrum if it asks for an update to avoid phishing.